Back and seat for a chair



FIG. 1 is a front, top, right perspective view of a back and seat for a chair showing my new design;

FIG. 2 is a rear, top, left perspective view thereof;

FIG. 3 is a front devotional view thereof;

FIG. 4 is a right side devotional view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines represent environment, which forms no part of the claim design. 

CLAIM The ornamental design for a back and seat for a chair, as shown and described. 